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@einen gti-ttes .gutem @ffice VJOSEPH W. GRAY, OF'CLERMON'T COUNTY, OHIO, ASSIGNCR TC SALADEE, FEE, AND COMPANY.

Letters .Patent-N0. "i5,322,-dated April 7, 1868.

L'IMPROVEMENT. IN; STEAM-ENGINE GOVERNOR.

"To ALL WHOM IT `MAY CONCERNE- Be it known that I, JOSEPH W. GRAY, of the county of.' Clermont, in the State of Ohio,have invented s, i

new and improved' Modeof Constructing a. Combined Steam-Gauge and Grovernori`A and I hereby declare that the following is a full and exact description thereof',l reference beinghad to the accompanying drawings, and the letters of reference marked thereon.

The nature of my invention consists chieiiy' in the manner hereinafter show n and described of combining, in one arrangementof parts,` a steanj-gauge and.' governor, insuch manner that the pressure of 'steani inthe boiler will govern theeng'ine. o

In the drawings', J represents a. small cylinder, scoured to the top ofthe boiler N,at any conrenient point, by means of bolts and the ilanch P.' This cylinder J is provided with a piston-rod, K, on the lower Yend'of which is the piston-head O, closely fitting the `cylinder J. The top of the cylinder is provided with a suitable cap or head; through which the piston-rodis allowed to Work,- the same es in-'the cylinderpandpiston of a. steam' engine. To the top of the pistonrod-K is hinged, in any proper incliner,- -the short connecting-plate VI, at the line 7, which is hinged to the lever A A 1, at dotted line 6. To the cylinder J is cast solid, or othewisc secured, the franie E F, substantially as shownA in the drawing. The 'left sid'e'of this frajmcFis made to, receive `andy holdl the lever A, so as to work upon a j'oin't, as shown at H. The right side of the frame Eis made to form 4the dinl for.indicating the pressure of the steam in the boiler. This dial is provided with the hand D, the lower end of which has a series of'small cogs, C, which Irepresent by the blue shading. These co'gs, C, mesh into a corresponding series of cog-SY, B, represented in blue shading, on the rear end of the lever A. The spirl spring V 'hes one end vsecured to the frame F, at 9, and -the other to the lever A, nt 8, for the purpose of drawing down the lever as the steam in the .boiler diminishes in power. Aweight may be substituted for thespring V,and answer the szimepu'rpose equally well. The lever A extends beyond the bearing at H, as shown nt AC1, in the outer end 4of ivhich is hinged, at R, the' rod 4or stretcher S, which connects the vulve of the 'a engine at 4 The operation of this Ycombinntion of steam-gauge and governor is substantially as follows, viz: Wewill suppos'ethat the'engine is now Working, ivith the valve wideA open, with a pressure of but thirty pounds of steam, as indicated upon thegaugesdinl E, and that this, for example, is the pressure'we desire to maintain upon the engine. It will n ow be observed' that as the 'steam rises in the boiler, the piston'K, in tlie cylinder J, will be raised accordingly, and push `up the rear end' of thelever A, which being connected to thev hand D by cogs B. and C, will indicate upon thedial E the'incrensed pressure of the steam, whileat the same 4time the'onter endof the lever at R is correspondingly lowered, :ind by ineens oft-he connecting-rod S the valve X is acted upon. Thus, if the st'eam'rises to indicatesny fifty pounds, when we want but a pressure of thirty pounds upon the engine, ivith the-valve wide open, the. valveuill be closed Vso' as to udmitof but thirty pounds pressure. Ferns the steamraises the end A of the-lever, by' the upward 'pressure of thevpiston K, and indicates the sume upon the dial, ns already shown and described, the end` 1 of thelever is lowered, and the valve 'acted upon accordingly, and a. uniformi pressure .of steam-innintoined upon the engine.

Having thus fully described4 the nature and object oi"my invcntion,`\vhat I claim as new., and desire to secure by a grant of Letters Patent, isl The combination of esteem-gauge und governor, so constructed und arranged' 'thatthe 4pressure of the steam in the boiler shall govern the engine,'substanftially as shown and described.

In testimony that I claim the above, I hereto subscribe my nome, on this 25th day of April, 1867.

JOSEPH W. GRAY.

' Witnesses JONATHAN PALMER, G. A. FRAZIER. 

